The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2003
Filed:
Aug. 06, 2001
Hidefumi Otsuka, Osaka, JP;
Tomonori Fujimoto, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A semiconductor integrated circuit includes a plurality of semiconductor memory devices implemented as DRAMs and an output selector on the same chip. External terminals of the chip include: terminals for inputting an inverted row address strobe signal /RAS to the respective semiconductor memory devices individually; and common terminals for inputting PRAUT, SLF, /CAS, ADR, /WE, /OE, CLK and TMODE signals to all the memory devices. The output signals TDQ, SRAS, MOUT and BITST of the semiconductor memory devices are controlled by the output selector, passed through a common test bus and then output from a common external terminal.